DBMS > IBM Db2 vs. Microsoft SQL Server
System Properties Comparison IBM Db2 vs. Microsoft SQL Server
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|Editorial information provided by DB-Engines|
|Name||IBM Db2 formerly named DB2 or IBM Database 2 Xexclude from comparison||Microsoft SQL Server Xexclude from comparison|
|Description||Common in IBM host environments, 2 different versions for host and Windows/Linux||Microsofts flagship relational DBMS|
|Primary database model||Relational DBMS Since Version 10.5 support for JSON/BSON documents compatible with MongoDB||Relational DBMS|
|Secondary database models||Document store|
RDF store in Db2 LUW (Linux, Unix, Windows)
Spatial DBMS with Db2 Spatial Extender
|Initial release||1983 host version||1989|
|Current release||12.1, October 2016||SQL Server 2019, November 2019|
|License Commercial or Open Source||commercial free version is available||commercial restricted free version is available|
|Cloud-based only Only available as a cloud service||no||no|
|DBaaS offerings (sponsored links) Database as a Service|
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|Implementation language||C and C++||C++|
|Server operating systems||AIX|
|Typing predefined data types such as float or date||yes||yes|
|XML support Some form of processing data in XML format, e.g. support for XML data structures, and/or support for XPath, XQuery or XSLT.||yes|
|SQL Support of SQL||yes||yes|
|APIs and other access methods||ADO.NET|
JSON style queries MongoDB compatible
Tabular Data Stream (TDS)
|Supported programming languages||C|
|Server-side scripts Stored procedures||yes||Transact SQL, .NET languages, R, Python and (with SQL Server 2019) Java|
|Partitioning methods Methods for storing different data on different nodes||Sharding only with Windows/Unix/Linux Version||tables can be distributed across several files (horizontal partitioning); sharding through federation|
|Replication methods Methods for redundantly storing data on multiple nodes||yes with separate tools (MQ, InfoSphere)||yes, but depending on the SQL-Server Edition|
|MapReduce Offers an API for user-defined Map/Reduce methods||no||no|
|Consistency concepts Methods to ensure consistency in a distributed system||Immediate Consistency|
|Foreign keys Referential integrity||yes||yes|
|Transaction concepts Support to ensure data integrity after non-atomic manipulations of data||ACID||ACID|
|Concurrency Support for concurrent manipulation of data||yes||yes|
|Durability Support for making data persistent||yes||yes|
|In-memory capabilities Is there an option to define some or all structures to be held in-memory only.||yes|
|User concepts Access control||fine grained access rights according to SQL-standard||fine grained access rights according to SQL-standard|
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|IBM Db2 formerly named DB2 or IBM Database 2||Microsoft SQL Server|
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